Ventilating body or screen



May 18, 1948. H. R. JENSEN 2,441,819

I VENTILATING BODY OR SCREEN Filed April 4, 1945 Elie/i fa. Jme/b,

Patented May 18 1948 UNITED STATES PATENr OFFICE r 2,441,819'VENTILATING BODY R SCREEN 1 Herbert R. Jensen, Washington, D. 0.Application April '4, 1945, Serial No. 586,486

This invention has general reference to a body or screen for the purposeof either entirely excluding or in subduing light, at the same timepermitting free circulation of air.

The invention has particular reference to a' motion pictures or lanternslides properly 'but' without interfering with ventilation. In otherinstances, the screen or panel may be constructed in such manner as topartially subdue light or to obviate glare, such, for instance, as maybe desirable in hospitals or sick rooms, while at the same time topermit free circulation of air through the body or panel.

With these objects in view, together with others which will appear asthe description proceeds, the invention consists in the novelconstruction, combination and arrangement of parts, all as will bedescribed more fully hereinafter, illustrated in the drawing, andparticularly pointed out in the claims.

In the drawing:

Fig. 1 is a front elevation showing a portion of a screen or panelembodying the invention, the view illustrating a screen of flexiblenature mounted upon a roller,

Fig. 2 is a transverse sectional view taken through the screen shown inFig. 1,

Fig. 3 is an enlarged fragmentary face view of a panel embodying theinvention and illustrating one way in which the cells may be assembled,

Fig. 4 is a transverse sectional view through the device shown in Fig.3,

Fig. 5 is a view similar to Fig. 3 and disclosing a modified form ofcell, and

Fig. 6 is a transverse sectional view through the device disclosed byFig. 5.

For the accomplishment of the purposes generally set forth, the screenor panel may be of rigid structure with predetermined dimensions, or maybe made in a flexible sheet so as to be capable of being either foldedor rolled. In what- 3 Claims. (01. 154-46) ever form, the panelcomprehends generally a A 2 openings are disposed at such angle to thetrue transverse dimension of the panel that the ends of the openings onone face of the panel are out of true alignment'or are offset withrespect to the opposite ends ofthe same'openings. By so disposing thecells,- no interference to the free passage of'air through the panelisoffered, at the same time the offsetting or misalignment of the ends ofthe cells precludes the passage of light rays therethrough.

I The material of which the panel or screenis made may vary. The panelmay be made of a semi-rigid or flexible body with openings formedtherein in the manner specified, or the panel may be-constructed of aseries of tubes -or cell-like bodies secured together in any desiredmanner to constitute a unitary structure. The body or the cells whichcomprise the same may be made of rubber, of plastic material, waterprooffabric or of synthetic material. In instances where the screen isdesigned to exclude light entirely, the cells will be of an opaquematerial so as to absorb light rays, while in instances Where a subduedlight only is desirable, the cells or the bod may be of asemi-transparent material. In the latter instance, a subdued light willbe permitted to pass through the body, at the same time all glare or thepossibility thereof is eliminated.

In Figs. 1 and 2 there is illustrated a panel or body I of flexibleconstruction, one end of the panel being secured to a conventional formof roller represented at 8 so that it may be mounted and operated inmuch the same manner as the well known window shade. In this form of theinvention the cells comprise a series of tubes 9 secured together in themanner disclose-d so as to form a composite body, the tubes beingassembled with their axes parallel and at such angle with respect to thetrue or minimum transverse dimension of the panel that the ends of thecells or tubes at the front of the panel are entirely out of alignmentor offset with respect to the opposite ends of the same cells or tubes.It is obvious, therefore, that when the screen is disposed in a windowor door opening, free passage of air through the many cells will bepermitted, while at the same time light rays will be broken up andabsorbed by the walls of the cells and no direct rays are capable ofpassing through the panel. In this form of the invention, as has beenheretofore stated, the panel will be made up of tubes or cellularstructures of flexible nature so that these cells will collapse topermit winding upon the roller 8.

The structure shown in Figs. 3 and 4 discloses more particularly themanner in which these tube-like bodies are formed and assembled toaccomplish the results above stated.

The modified form of the invention shown in Figs. 5 and 6 discloses thesame inventive idea carried out with tubular bodies or cells I0 of moreor less angular transverse shape. In this instance, the-members Illconstituting the cells are of hexagonal cross section, permitting ofready and secure assemblage in the construction of the composite screen.

In any form of the invention, the angularity 1 or arrangement of theopenin s, cells or tubes will be such that the walls thereof will extendacross the true transverse axis of the openings on opposite faces of thescreen or panel 50 that these walls themselves intercept light rayssentering the openings at one side of the panel and prevent them frompassing to the openings sat the opposite side of the panel. At the sametime, ree access of air through the cells .is at all times permitted.

From the .toregoing, it is apparent that a screen or panel constructed:in: this manner will accomplish the objects zsoughtxpermitting treepassage of .air through :the panel while at the same time eitherrs-holly excluding; or subdui-ng, thepassagecilightitherethrcugh.

'Iciaim:

1. A ventilating screen comprising a panel formed of flexible zrmaterialand having therein a plurality of openings extending irom the :front tothe rear tacess'thereof :and iclisposcdin :parallelism, :the :angles 10fthe axes :zcf said openings with respect to the true transversedimension of said panel being such that the'ends of the openout ofalignment with each other.

-3.-A ventilating screen comprising a thin elongated panel 'formed of aplurality of open ended lindependentirubular members secured together in.abutting -para-lle1 relationship throughout 'theirleng'ths, the anglesof the axes of said open- .ing's with respect to the true transversedimension of said panel being such that the ends of the openings ononetfaceof the panel are out of true alignment with the opposite ends ofthe sameepenings.

' vI-IERli-ER'I' R e-JENSEN. [REFERENCES CITED. V The followingireferences :are ;of record :in the file of this :patent:

" "UNITED STATES PATENTS Number Name 7 Date 768,514 Christen Aug. 23,1904 2;019,-1'86 Kaiser "Oct. 29, 1935 12,294,966 Dreyfus 1 Sept. 8;1942 2,369,006 7 (Banks Feb. 6, 1945

